title: Peri-ampullary collision tumor - high grade neuroendocrine carcinoma and signet ring cell carcinoma: a case report and review of literature.
abstract: We report a case of 50-year-old male with obstructive jaundice diagnosed as peri-ampullary collision tumor comprising of large cell neuroendocrine carcinoma and signet ring cell carcinoma. The association of neuroendocrine (usually carcinoids) and adenocarcinoma is extremely uncommon with only few case reports available in the reported literature.
authors.affiliation: Rajiv Gandhi Cancer Institute and Research Centre, Sector-5, Rohini, Delhi 110 085, India. doc_anuj@yahoo.com
authors.forename: Anuj
authors.initials: A
authors.lastname: Khurana
authors.forename: Anila
authors.initials: A
authors.lastname: Sharma
authors.forename: Gurudutt
authors.initials: G
authors.lastname: Gupta
authors.forename: Jatin S
authors.initials: JS
authors.lastname: Gandhi
mesh_terms: D000071616:CDX2 Transcription Factor; D018278:Carcinoma, Neuroendocrine / Q000150:complications* / Q000175:diagnosis* / Q000473:pathology; D018279:Carcinoma, Signet Ring Cell / Q000150:complications* / Q000175:diagnosis* / Q000473:pathology; D003138:Common Bile Duct Neoplasms / Q000175:diagnosis* / Q000473:pathology*; D006651:Histocytochemistry; D018398:Homeodomain Proteins / Q000032:analysis; D006801:Humans; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging; D008297:Male; D008853:Microscopy; D008875:Middle Aged; D011860:Radiography, Abdominal; D016708:Synaptophysin / Q000032:analysis; D015534:Trans-Activators / Q000032:analysis
chemical_list: D000071616:CDX2 Transcription Factor; D018398:Homeodomain Proteins; D016708:Synaptophysin; D015534:Trans-Activators